Apparatus

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flight_takeoff Flight

UAL1644

Operated by United Airlines

Live map

Live map filtered to UAL1644. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SJU TJSJ VFR

Luis Munoz Marin International Airport

San Juan, PR

Local time
16:12 AST
Timezone
America/Puerto_Rico
Type
Large Airport
Elevation
9 ft
Coordinates
18.4394, -66.0018

cloud Weather

Wind
80° / 13G21 kt
Visibility
10 SM
Ceiling
FEW 4,100 ft, SCT 6,000 ft, SCT 9,000 ft
Temp / Dew
32°C / 24°C
Altimeter
29.95 inHg

Obs: 2026-08-28T19:56:00.000Z

Raw METAR / TAF 
METAR TJSJ 281956Z 08013G21KT 10SM FEW041 SCT060 SCT090 32/24 A2995 RMK AO2 SLP141 SHRA DSNT W NW T03170244 $

TAF TJSJ 281740Z 2818/2918 07016G26KT P6SM VCSH SCT025 SCT040 FM282200 10008KT P6SM SCT025 SCT050 FM291300 08016G26KT P6SM FEW030 SCT050

flight Live Traffic

flight_takeoff 30 Departures
flight_land 32 Arrivals

Arrival

IAH KIAH VFR

George Bush Intercontinental Airport

Houston, US

Local time
15:12 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
97 ft
Coordinates
29.9844, -95.3414

cloud Weather

Wind
120° / 8 kt
Visibility
10 SM
Ceiling
FEW 5,500 ft, SCT 25,000 ft
Temp / Dew
36°C / 22°C
Altimeter
29.97 inHg

Obs: 2026-08-28T19:53:00.000Z

Raw METAR / TAF 
METAR KIAH 281953Z 12008KT 10SM FEW055 SCT250 36/22 A2997 RMK AO2 SLP146 CB DSNT S-W-N MOVG SW T03610222

TAF KIAH 281720Z 2818/2924 VRB05KT P6SM SCT030 SCT250 FM282000 13007KT P6SM VCSH SCT050 SCT250 PROB30 2821/2824 VRB15G25KT -TSRA BKN050CB FM290000 VRB05KT P6SM FEW030

flight Live Traffic

flight_takeoff 125 Departures
flight_land 155 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A44938 SJU → IAH Jul 26, 11:15 UTCJul 26, 15:10 UTC3h 55m - -
2026-07-26 A44938 SJU → IAH Jul 26, 11:13 UTCJul 26, 15:07 UTC3h 54m +13m +1m
2026-07-25 A12F08 SJU → IAH Jul 25, 11:10 UTCJul 25, 15:15 UTC4h 5m - -
2026-07-24 A445A4 SJU → IAH Jul 24, 13:10 UTCJul 24, 15:25 UTC2h 15m - -
2026-07-24 A445A4 SJU → IAH Jul 24, 11:25 UTCJul 24, 11:35 UTC10m - -
2026-07-23 A12AA0 SJU → IAH Jul 23, 12:55 UTCJul 23, 15:15 UTC2h 20m - -
2026-07-23 A12AA0 SJU → IAH Jul 23, 11:10 UTCJul 23, 11:20 UTC10m - -
2026-07-22 A449A1 SJU → IAH Jul 22, 13:00 UTCJul 22, 15:30 UTC2h 30m - -
2026-07-22 A449A1 SJU → IAH Jul 22, 11:15 UTCJul 22, 11:25 UTC10m - -
2026-07-21 AA7E9B SJU → IAH Jul 21, 11:15 UTCJul 21, 15:40 UTC4h 25m - -
2026-07-20 AA7F23 SJU → IAH Jul 20, 11:20 UTCJul 20, 12:10 UTC50m - -
2026-07-20 AA7F23 SJU → IAH Jul 20, 11:13 UTCJul 20, 15:38 UTC4h 25m +13m -5m
2026-07-19 AA7AA0 SJU → IAH Jul 19, 11:10 UTCJul 19, 15:30 UTC4h 20m - -
2026-07-19 AA7AA0 SJU → IAH Jul 19, 11:13 UTCJul 19, 15:28 UTC4h 15m +13m +5m
2026-07-18 A448D5 SJU → IAH Jul 18, 12:55 UTCJul 18, 15:15 UTC2h 20m - -
2026-07-18 A448D5 SJU → IAH Jul 18, 11:10 UTCJul 18, 11:20 UTC10m - -
2026-07-17 A12F70 SJU → IAH Jul 17, 13:45 UTCJul 17, 15:40 UTC1h 55m - -
2026-07-17 A12F70 SJU → IAH Jul 17, 11:20 UTCJul 17, 11:35 UTC15m - -
2026-07-16 A44939 - Jul 16, 05:15 UTCJul 16, 15:14 UTC10h 0m - -
2026-07-15 A448F8 - Jul 15, 11:20 UTCJul 15, 15:30 UTC4h 10m - -
2026-07-14 A5D623 SJU → IAH Jul 14, 11:18 UTCJul 14, 15:53 UTC4h 35m +18m -3m
2026-07-13 A76066 - Jul 13, 11:10 UTCJul 13, 15:55 UTC4h 45m - -
2026-07-12 A449A2 - Jul 12, 11:10 UTCJul 12, 15:40 UTC4h 30m - -
2026-07-11 A44984 - Jul 11, 11:20 UTCJul 11, 15:55 UTC4h 35m - -
2026-07-10 A2BBC6 - Jul 10, 11:15 UTCJul 10, 15:30 UTC4h 15m - -
2026-07-09 A12F75 - Jul 9, 12:55 UTCJul 9, 15:20 UTC2h 25m - -
2026-07-09 A12F75 - Jul 9, 11:10 UTCJul 9, 11:25 UTC15m - -
2026-07-08 AA7F01 - Jul 8, 13:10 UTCJul 8, 15:35 UTC2h 25m - -
2026-07-08 AA7F01 - Jul 8, 11:30 UTCJul 8, 11:40 UTC10m - -
2026-07-07 A12AC7 - Jul 7, 11:15 UTCJul 7, 15:35 UTC4h 20m - -

Performance history

Flights tracked
209 showing last 30
Avg arrival delay
on time
On-time arrival
100% 100% on time
Aircraft used
20

Monthly activity 4 months

Month Flights tracked
July 2026 41
June 2026 59
May 2026 65
April 2026 44

UAL1644 frequently asked

Where does flight UAL1644 fly?
UAL1644 (United Airlines) flies from SJU to IAH. View the full route page.
How long is flight UAL1644?
Based on observed flights, UAL1644 takes on average 2h 58m from takeoff to landing.
How often does UAL1644 fly?
UAL1644 has been observed flying several times a week in our tracking data. We've recorded 209 flights under this callsign.
Is flight UAL1644 usually on time?
Across recent flights, UAL1644 arrives 0 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1644?
UAL1644 has been operated by 20 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1644 live?
Yes. When UAL1644 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.